Necessitas Project

Necessitas is a KDE community project aimed to provide an easy way to develop Qt apps on Android platform.

Please see below link for detail.

http://necessitas.kde.org/
http://www.youtube.com/watch?v=suPeZ7XC1xk

Hello QT Creator (install QT Creator in windows XP)

Download IDE

We need an IDE for development. (Dev C++, VS .Net, QT Creator, Eclipse)
Here we choice QT Creator to achive this goal, so you have to download the QT Creator for windows in official site.
qt-creator-win-opensource-2.1.0.exe (included MinGW).
http://qt.nokia.com/downloads/qt-creator-binary-for-windows

Download QT Library

Also, you have to download the QT library for compile and make.

qt-win-opensource-4.7.2-mingw.exe  (compiler, qmake, QT library)

http://qt.nokia.com/downloads/windows-cpp

When you ready all materials, let work it out!

Install the QT Creator

Just click Next until it's done.

Install the QT library

Only have to modify the MinGW install path to QT Creator install folder.
like C:\Qt\qtcreator-2.1.0\mingw

Then just click Next until it's done.

Setup Environment Variables

Add Path

C:\Qt\4.7.2\bin

C:\Qt\qtcreator-2.1.0\mingw\bin

Add Variable

QMAKESPEC = C:\Qt\4.7.2\mkspecs\win32-g++

QTDIR = C:\Qt\4.7.2

Hello QT

Create a test.cpp file in C:\QT\Work
#include <QApplication>
#include <QPushButton>
int main(int argc, char *argv[])
{
   QApplication app(argc, argv);
   QPushButton hello("Hello world!");
   hello.show();
   return app.exec();
}


Execute Cmd.exe for Compile and make
Chang directory to C:\QT\Work
Execute qmake -project in command line.
Execute qmake in command line.
Execute make in command line.

Run it !

Hello QT Creator

1. Execute Qt Creator
2. Select File->New File or Project on menu.
3. Choose Qt C++ Project and Qt Gui Application then click Choose.

4. Input project name and folder location.
5. Decide the 'Main Window' class infomation, then click Next and Finish.
6. Select Debug->Start Debugging->Start Debugging on menu.

Reference:
http://blogold.chinaunix.net/u3/94212/showart_2526345.html
http://qt.nokia.com/

Hello QT (install QT in linux)

Because my system OS is win xp, so I have to use VM for establish linux enviorment.

1. Install VM station.

Choice "Typical" way and just click "next" until it has done.
Sure, you guy should restart computer after installation compeleted.

2. Install Ubuntu on Virtual Machine.

You can get lastest version of Ubuntu from official web site. (http://www.ubuntu.com/)
Create a new virtual machine in VM workstation and install from image file.

   

















Then completed the installation by yourself, because nothing special need to metion here.

3. Make sure you can compile C/C++ file

Write a simple Hello.c file for test the function.

#include<stdio.h>
int main()
{
    printf("Hello Ubuntu!\n");
    return 0;
}

run it...
$ gcc －Wall Hello.c -o testc
$ ./testc
$ Hello Ubuntu!If you can't done this....type the command in terminial for install gcc.
sudo apt-get install build-essential   (Recommand to do this whatever.)

4. Install QT 4 in Ubuntu

Type command below in terminal for QT 4 installation.
sudo apt-get install libqt4-dev         (necessary)
sudo apt-get install qt4-doc            (necessary)
sudo apt-get install qt4-designer     (necessary)
sudo apt-get install libqt4-dbg         (optional)
sudo apt-get install libqt4-gui          (optional)
sudo apt-get install libqt4-sql          (optional)
sudo apt-get install qt4-dev-tools    (optional)
sudo apt-get install qt4-qtconfig      (optional)

Wait about 20 minutes for download and setup automatically.

5. Write HelloQT.cpp file

#include <QApplication>
#include <QPushButton>
int main(int argc, char *argv[])
{
   QApplication app(argc, argv);
   QPushButton hello("Hello world!");
   hello.show();
   return app.exec();
}

6. Make and Run

Execute command below in turn for make files.
$ qmake -project
$ qmake
$ make

Then run it !
$ ./HelloQT

Reference
http://wallyjue.blogspot.com/2008/08/ubuntu-qt4.html
http://forum.ubuntu.org.cn/viewtopic.php?f=88&t=190878